Description

The following code directly in the Twenty Twenty Five theme's functions.php file or in a child theme for the Twenty Twenty Five theme does not remove the core patterns. We need a way to remove core patterns from the default theme. Cheers!

function my_theme_setup() {
    // REMOVE CORE WP PATTERNS
    remove_theme_support( 'core-block-patterns' );
}
add_action( 'after_setup_theme', 'my_theme_setup' );

Also does not work:

add_action('init', function() {
    remove_theme_support('core-block-patterns');
});

Step-by-step reproduction instructions

Add one or both of the above snippets to a child theme for the Twenty Twenty Five theme with no other plugins installed and then add a new page, click the (+) to add a block or pattern, see the core patterns are still present.

Screenshots, screen recording, code snippet

No response

Environment info

• wp 6.9
• latest gutenberg (also happens without)
• chrome
• mac

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure